Inflammation, tissues and tumor necrosis can also elevate CPK. Too low a dose of Methimazole could account for under-control of your cat’s
hyperthyroid disease and over-catabolism continues, thus elevating CPK.
Potassium is an electrolyte lost from vomiting, diarrhea, or excessive urination. While the most common cause of low potassium is chronic renal failure, low potassium is also associated with hyperthyroid, however, the etiology is unknown.